A Cinderella Story: Once Upon a Song

An ambitious, resilient teenage singer who endures relentless pressure from her adoptive family. She secretly guides Bev via text messages to help maintain the ruse while preparing to claim her own voice on stage. Katie’s determination to be heard drives the plot and culminates in a powerful live performance that proves her true talent.

The reluctant heir to the music industry legacy, son of Kensington Records' president. He isn't eager to follow in his father's footsteps and is drawn in by the mystery of who sang for him. As he grows closer to Bev and, by extension, to Katie's truth, he becomes a catalyst for exposing the fraud.

Gail's pawn who cannot sing publicly and lip-syncs to Katie's voice to secure fame. She becomes entangled in Gail's plan to steal Katie's credit, driven by pressure and the desire for stardom. As the truth surfaces, she confronts how manipulation has controlled her and seeks independence from the scheme.

A domineering adoptive mother who uses wealth and deception to push her daughters toward a manufactured career. She leverages Katie’s late father’s savings to coerce obedience and orchestrates Bev's lip-sync ruse. Her deceit unravels when the truth surfaces, leading to her downfall.

The underappreciated brother who has endured the family’s mistreatment. He overhears the scheme and chooses to act, helping expose the deception. By siding with Katie, he disrupts Bev's performance and pushes the truth into the spotlight.

Katie's best friend and confidante who encourages her to perform and challenges Gail's manipulations. She helps spark the Bollywood ball moment that exposes the ruse and sustains Katie's resolve.

The assistant principal enforcing school rules and guiding Luke to stay on a proper path. She embodies institutional pressure and acts as a gatekeeper the characters must navigate to pursue their ambitions.

Gail’s supposed guru, a guiding figure in the plan to promote Bev and undermine Katie. He acts as a trusted adviser within the manipulation network, enabling the scheme to influence actions.

A mysterious figure who adds chaos to Luke's night, embodying disruption and unpredictability amid the evening's events. Her presence underscores the disorder that deception brings to the story.

English president of Kensington Records and Luke's father. He pushes his son into the academy to discover fresh talent but remains a corporate figure until he confronts Gail’s deception and reports her to the school board.